Epson Expression ET-2500 Printer Drivers. The Epson Ecotank ET-2500 represents the second generation of ink multifunction printers with tanks instead of cartridges. Like the first litter we tested on the example of the Epson Ecotank L555, the ink tanks are located on the side of the case. If they looked like a floating foreign object on the L555, the new ink container with the actual combi housing forms a unit. This gives the current Ecotank ET-2500 a more homogeneous design. At the same time you do not have to lift the ink station to fill it, as was the case with its predecessor. Also new is that the ink supply can be closed. To do this, Epson has an eyelet attached to the ink tank, through which a wire or narrow padlock can be pulled to protect the tanks from unwanted access.